CASE FAN LED's

majorghn · Apr 8, 2018

I have a Thermaltake MK1 Chaser case, it has two 240 mm fans with LED's, the tip of the fan cable is a 3 prong, I had a new MB installed yesterday along with other CPU related hardware, basically a new PC now, the MB headers are 4 pin, guess what? The fans turn but no LED's lighting up, is this because I need that 3rd pin?

ASUS tech was not sure when I called them, if it is the problem do I need to buy a 3 pin to 4 pin adapter or 4 pin to 3 pin?

bignastyid · Apr 8, 2018

What fan profile are you using? If you are using a quite or custom profile with the fans turned down? Many boards do this with 3 pin fan by giving them less power and that reduced power may not be enough for the leds so they will be dim or appear to be off.

majorghn · Apr 8, 2018

Fan Profile? I have not set up a fan profile, I assume you are talking about the BIOS? The MB installed is the ASUS ROG STRIX B350-F

bignastyid · Apr 8, 2018

Enter the bios try using a high performance fan profile or manually bump them up to 100% and see if the LEDs work.

majorghn · Apr 8, 2018

bignastyid :

Can you call me?

majorghn · Apr 8, 2018

No idea how to do much with the BIOS

bignastyid · Apr 8, 2018

majorghn :

No.

bignastyid · Apr 8, 2018

majorghn :

To enter the bios press f2 or delete when the Asus bios screen is up. When in the bios go to monitor and from there go to q fan control. In q fan control select full speed and select apply. More information on this and other bios setting can be found in section 3 of the manual.
https://www.asus.com/us/Motherboards/ROG-STRIX-B350-F-GAMING/HelpDesk_Manual/

majorghn · Apr 8, 2018

bignastyid :

Q fan control in BIOS has the following options:

Standard Silent Turbo Full Speed and Manual

Should I change from standard to full speed? Dont see how fan speed helps turn on LED lights

majorghn · Apr 8, 2018

Now case fans will not come on at all. Put back to standard also, still nothing

bignastyid · Apr 8, 2018

Possible those big fans just need more power than the ports on the motherboard can deliver. You may want to get 3-pin to 4-pin molex or sat power adapters to run those big fans. This might be why the newer version of that fan use sata power.

https://www.newegg.com/Product/Product.aspx?Item=9SIACJF76E4315
https://www.amazon.com/CRJ-4-Pin-Sleeved-Power-Adapter/dp/B0711CR7HV

majorghn · Apr 8, 2018

bignastyid :

The two big fans are turning now, the two cables for them came off the motherboard when I tilted the case looking for a screw, didnt realize they had come off.

Tweeked the fans manually to 100% still no lights.

ASUS tech support said it may be that my large fans only have one cable instead of two, one for power and one for RGB, I told him my fans are LED light not RGB dont have same requirements.

bignastyid · Apr 8, 2018

Ok I pulled up the manual for the case. For those leds to function the fans need to be plugged into the fan controller in the case not the motherboard. Page 20
http://www.thermaltake.com/products-model_support.aspx?id=C_00001719

Once plugged into the controller the fans can be controlled from the buttons on the case.

majorghn · Apr 8, 2018

Thst was so nice of you to do that

Karadjgne · Apr 9, 2018

The fans included on the mk1 chaser are 200mm colorshift RGB fans which is why they need to be plugged into the case controller to work right. The mobo doesn't include RGB capability that matches what the fans require, a variable voltage for speed control and variable frequency for the lighting.

majorghn · Apr 9, 2018

Karadjgne :

majorghn · Apr 9, 2018

I took the back of the back of the case off and found the fan controller cable, it bifurcates into two cables towards the end so you can plug in the two cables coming off the two case fans, so plugged each one in to the fan controller and restarted my pc, nothing, the fans don't even turn let alone the LED's not coming on.

I guess the fan controller needs to be plugged into the MB or the power supply, I have one cable that is not doing anything and it is coing from the area of the fan controller it is a molex that on one side has 4 male pins and the other side has 4 pin female, no idea what kind of cable that is opr what it plugs into. If I could send a photo I of it I would.

bignastyid · Apr 9, 2018

Upload a pic to imgur and post that here.

majorghn · Apr 9, 2018

Here are links to a cable I don't know what type it is or where it plugs into, it may be the fan controller??

https://imgur.com/MzDax6H

https://imgur.com/xtBgZaW

majorghn · Apr 9, 2018

bignastyid :

Thanks for your reply, just added the links to two images of the molex

bignastyid · Apr 9, 2018

That's a passthrough molex connector. One end of that should plug into a psu cable to power the fan controller.

majorghn · Apr 9, 2018

So your saying the fan controller plugs into a power supply cable? Why does my plug have two sides, one female and one male side? Do I need to use both sides? What does the power cable that fits this look like?

bignastyid · Apr 9, 2018

The female side is what the psu will plug into the other side is so you can connect other molex cables to it if needed. If you have a modular psu look in the psu box for the molex power cable.

majorghn · Apr 9, 2018

I have no power cables with the configuration needed for that cablke, all my PSU cables have female ends that would go into the PSU unit.

bignastyid · Apr 9, 2018

What psu do you have? Was all this working before you had someone install the motherboard?

CASE FAN LED's

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